Valve-gear for engines.



No. 822,136. PATENTED MAY 29, 1906 H. LENTZ. VALVE GEAR FOR ENGINES.

APPLICATION FILED OCT. 10. 1905.

UNITED STATES PATENT @FFTQE.

HUGO L ENTZ OF BERLIN, GERMANY, ASSIGNOR OF ONE-HALF TO CHARLES BELLENS. F NEUILLY-SUR-SEINE, FRANCE.

VALVE-GEAR FOR ENGINES.

Specification of Letters Patent.

Patented May 29, 1906.

To all whom it m ay concern:

Be it known that I, HUGO LENTZ, a subject of the Emperor of Germany, residing at My invention relates to that class of steam- I locomotive cylinders the valves of which are actuated .by. a rod presenting valve-lifting surfaces, reciprocating in a longitudinal tubular member, While the valve-stems are roller-holders and to the valve-stems.

.serves as common oil-reservoir.

guided in four tubular members located at right angles to the longitudinal one.

The invention consists in improvements in such mechanism with a view to insuring better protection of the various parts of the gear from atmospheric influences, dust, &c. and to effectin thorough lubrication of all movable parts om a common lubricating device. For this purpose the tubular members guiding the valve-stems are open at the top and inclosed in a box-shaped chamber closed above by a hollow cover, the space in which My invention is illustrated in panyingdrawings, in which- Fi e 1 is a longitudinal section on the line B of Fig. 2, and Fig. 2 a cross-section on the'line C D of Fig. 1.

The tubular guiding parts m m m m in which the roller-holders of the valve-stems a b 0 cl are guided, are open at the top and closed in a chest or casing e. The cover f of this casing thoroughly closes the latter at the top and presents recesses g g g g" on the innor surface, into which recesses there fit the springs h h h h which effect closing of the the accomvalves, the other ends of which s rings enter.

shallow recesses in the heads 0 the roller holders. The cover f is hollow, and the cham her so presented serves as oil-reservoir and is provided with oil-ducts '5 t i i above the guides m to m The lubricant is fed throu h the ducts Mo 01. into the chest-e andfirst to tAe t the'same time the lubricant also flows tothe lifter-rod 0, working in the guide k.

The lubricant-reservoir in the cover is provided above the oil'distributing ducts t to i with apertures through which each distributing-duct is accessible. These apertures may be closed-for instance, by simple screwplugs '11. n n n. The apertures may also inj 1 guide presentin serve for filling the lubricant into the reservoir; but the lubricant can naturally also be fed continuously to the reservoir in. suitable manner, if desired.

For the purpose of insuring common lubrication and uniform distribution of the lubricant to all moving parts, including such as are below the lifter-rod 0, passages p p are furnished below the latter to'enable flow of oil between the uides mm and m m and the stems a and c d, respectivley, and these passages pp communicate, by means of holes g g, with the interior of the uide 7c, so that they receive lubricant from this uide k and the, casing e. The passages 19 p, c osed at the outer en by plugs r 1", may also be supplied with oil -for instance, at s svby a separate oil-feed device. I

The provision of the casing or box e afiords the most effectual protection for the valvegear parts from external influences and the entrance ofdust or the like, and even should the plugs 11, to n be removed nothing can obtain access to the gear parts which would ex-- ercise an injurious effect upon them. The

employment of acommon oil-reservoir with provision for distribution of the lubricant to all parts of the gear affords full guaranty for thorough and uniform lubrication. The consumption of oil also is essentiallv diminished,

and the use of the reservoir e o ers the additional advantage of enabling the collected oil and the water of condensation to be run off.

Having thus described my invention, what I claim as new, and desire to secure by Letter's Patent, is

p 1. A valve-gear for engines having liftvalves actuated by a lifter-rod, a tubular a longitudinal guideway for the rod and gui eways for the valve-stems located at right angles to the lon 'tudinal guideway and 0 en at the top, an a single casin inclosin a l of the valve-stem guideways an provide with a cover, substantially as described. w i I 2. A valve-gearfor' engines having liftvalves actuated by a lifter-rod, a tubular guide presenting a longitudinal guideway for the rod and guideways for the valve-stems located at ri'ht angles to the longitudinal guideway an open at the top, and a casin inclosing the valve-stem guideways an closed by a, hollow cover which serves as lubricant-container, substantially as described.

3. A valve-gear for engines having lift- 1 guideways and communicating with the said 10 valves actuated by a lifter-rod, a tubular channels, substantially as described.

guide presenting a longitudinal guideway for; In testimony whereof I have hereunto set the rod and guideways for the valve-stems 1 my hand in the presence of two subscribing located at ri ht angles to the longitudinal Witnesses. guideway and open'at the top, and present HUGO LENTZ. ing oil-channels located between the alvestem guideways and below the lifter-rod, and a covered casing inclosing the valve-stem Witnesses HENRY HAsPER, WOLDEMAR HAUPT. 

